/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:16:26,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:16:26,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:16:26,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:16:26,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:16:26,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:16:26,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:16:26,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:16:26,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:16:26,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:16:26,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:16:26,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:16:26,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:16:26,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:16:26,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:16:26,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:16:26,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:16:26,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:16:26,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:16:26,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:16:26,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:16:26,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:16:26,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:16:26,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:16:26,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:16:26,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:16:26,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:16:26,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:16:26,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:16:26,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:16:26,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:16:26,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:16:26,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:16:26,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:16:26,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:16:26,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:16:26,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:16:26,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:16:26,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:16:26,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:16:26,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:16:26,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:16:26,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:16:26,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:16:26,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:16:26,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:16:26,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:16:26,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:16:26,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:16:26,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:16:26,124 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:16:26,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:16:26,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:16:26,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:16:26,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:16:26,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:16:26,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:16:26,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:16:26,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:16:26,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:16:26,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:16:26,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:16:26,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:16:26,128 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:16:26,129 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:16:26,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:16:26,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:16:26,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:16:26,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:16:26,129 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:16:26,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:16:26,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:16:26,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:16:26,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:16:26,363 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:16:26,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c [2022-01-10 06:16:26,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4a97ab6f/a3f5c5030ef348e194c65e4b2035722e/FLAG49a335597 [2022-01-10 06:16:26,940 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:16:26,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c [2022-01-10 06:16:26,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4a97ab6f/a3f5c5030ef348e194c65e4b2035722e/FLAG49a335597 [2022-01-10 06:16:27,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4a97ab6f/a3f5c5030ef348e194c65e4b2035722e [2022-01-10 06:16:27,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:16:27,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:16:27,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:16:27,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:16:27,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:16:27,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:16:27" (1/1) ... [2022-01-10 06:16:27,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0a5657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:27, skipping insertion in model container [2022-01-10 06:16:27,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:16:27" (1/1) ... [2022-01-10 06:16:27,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:16:27,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:16:27,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c[4370,4383] [2022-01-10 06:16:28,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:16:28,127 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:16:28,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:16:28,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c[4370,4383] [2022-01-10 06:16:28,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:16:28,304 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:16:28,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c[4370,4383] [2022-01-10 06:16:28,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:16:28,440 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:16:28,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28 WrapperNode [2022-01-10 06:16:28,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:16:28,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:16:28,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:16:28,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:16:28,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,549 INFO L137 Inliner]: procedures = 112, calls = 382, calls flagged for inlining = 33, calls inlined = 29, statements flattened = 965 [2022-01-10 06:16:28,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:16:28,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:16:28,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:16:28,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:16:28,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:16:28,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:16:28,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:16:28,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:16:28,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (1/1) ... [2022-01-10 06:16:28,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:16:28,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:16:28,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:16:28,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:16:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:16:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:16:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:16:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:16:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:16:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:16:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2022-01-10 06:16:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2022-01-10 06:16:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2022-01-10 06:16:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2022-01-10 06:16:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:16:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:16:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2022-01-10 06:16:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2022-01-10 06:16:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:16:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:16:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:16:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:16:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:16:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:16:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2022-01-10 06:16:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2022-01-10 06:16:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-01-10 06:16:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-01-10 06:16:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:16:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:16:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:16:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:16:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:16:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:16:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:16:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:16:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:16:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:16:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:16:28,698 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2022-01-10 06:16:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2022-01-10 06:16:28,699 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:16:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:16:28,699 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-01-10 06:16:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-01-10 06:16:28,699 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:16:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:16:28,699 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:16:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:16:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2022-01-10 06:16:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2022-01-10 06:16:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2022-01-10 06:16:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2022-01-10 06:16:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:16:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:16:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:16:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2022-01-10 06:16:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2022-01-10 06:16:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:16:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:16:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:16:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:16:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:16:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:16:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:16:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:16:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-01-10 06:16:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-01-10 06:16:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:16:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:16:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2022-01-10 06:16:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2022-01-10 06:16:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:16:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:16:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:16:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:16:28,875 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:16:28,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:16:29,908 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:16:29,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:16:29,924 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:16:29,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:16:29 BoogieIcfgContainer [2022-01-10 06:16:29,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:16:29,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:16:29,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:16:29,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:16:29,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:16:27" (1/3) ... [2022-01-10 06:16:29,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2307d57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:16:29, skipping insertion in model container [2022-01-10 06:16:29,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:16:28" (2/3) ... [2022-01-10 06:16:29,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2307d57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:16:29, skipping insertion in model container [2022-01-10 06:16:29,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:16:29" (3/3) ... [2022-01-10 06:16:29,936 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_productSimulator.cil.c [2022-01-10 06:16:29,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:16:29,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:16:30,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:16:30,040 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:16:30,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:16:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 514 states have (on average 1.6478599221789882) internal successors, (847), 541 states have internal predecessors, (847), 125 states have call successors, (125), 34 states have call predecessors, (125), 34 states have return successors, (125), 117 states have call predecessors, (125), 125 states have call successors, (125) [2022-01-10 06:16:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:16:30,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:30,113 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:30,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1079928857, now seen corresponding path program 1 times [2022-01-10 06:16:30,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:30,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590083992] [2022-01-10 06:16:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:30,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:30,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:30,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:16:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:16:30,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:30,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:30,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:30,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590083992] [2022-01-10 06:16:30,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590083992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:30,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:30,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:16:30,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170557622] [2022-01-10 06:16:30,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:30,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:16:30,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:16:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:16:30,765 INFO L87 Difference]: Start difference. First operand has 675 states, 514 states have (on average 1.6478599221789882) internal successors, (847), 541 states have internal predecessors, (847), 125 states have call successors, (125), 34 states have call predecessors, (125), 34 states have return successors, (125), 117 states have call predecessors, (125), 125 states have call successors, (125) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-01-10 06:16:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:30,845 INFO L93 Difference]: Finished difference Result 696 states and 1127 transitions. [2022-01-10 06:16:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:16:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2022-01-10 06:16:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:30,873 INFO L225 Difference]: With dead ends: 696 [2022-01-10 06:16:30,873 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:30,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:16:30,879 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:30,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6456692913385826) internal successors, (836), 533 states have internal predecessors, (836), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1081 transitions. [2022-01-10 06:16:30,978 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1081 transitions. Word has length 91 [2022-01-10 06:16:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:30,980 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1081 transitions. [2022-01-10 06:16:30,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-01-10 06:16:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1081 transitions. [2022-01-10 06:16:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:16:30,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:30,986 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:30,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:16:31,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:31,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -130920293, now seen corresponding path program 1 times [2022-01-10 06:16:31,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:31,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901742734] [2022-01-10 06:16:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:31,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:31,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:31,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:31,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:16:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:31,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:16:31,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:31,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:31,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:31,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901742734] [2022-01-10 06:16:31,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901742734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:31,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:31,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:16:31,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035171725] [2022-01-10 06:16:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:31,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:16:31,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:16:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:31,654 INFO L87 Difference]: Start difference. First operand 667 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:31,765 INFO L93 Difference]: Finished difference Result 1312 states and 2131 transitions. [2022-01-10 06:16:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:16:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2022-01-10 06:16:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:31,786 INFO L225 Difference]: With dead ends: 1312 [2022-01-10 06:16:31,786 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:31,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:31,804 INFO L933 BasicCegarLoop]: 1079 mSDtfsCounter, 3 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:31,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.639763779527559) internal successors, (833), 533 states have internal predecessors, (833), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1078 transitions. [2022-01-10 06:16:31,842 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1078 transitions. Word has length 93 [2022-01-10 06:16:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:31,845 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1078 transitions. [2022-01-10 06:16:31,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1078 transitions. [2022-01-10 06:16:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 06:16:31,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:31,851 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:31,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:32,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:32,070 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1333921498, now seen corresponding path program 1 times [2022-01-10 06:16:32,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:32,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502791044] [2022-01-10 06:16:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:32,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:32,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:32,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:16:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:32,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:32,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:32,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:32,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:32,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502791044] [2022-01-10 06:16:32,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502791044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:32,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:32,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:32,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403681711] [2022-01-10 06:16:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:32,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:32,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:32,648 INFO L87 Difference]: Start difference. First operand 667 states and 1078 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:32,735 INFO L93 Difference]: Finished difference Result 1297 states and 2107 transitions. [2022-01-10 06:16:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2022-01-10 06:16:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:32,741 INFO L225 Difference]: With dead ends: 1297 [2022-01-10 06:16:32,742 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:32,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:32,746 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 14 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:32,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3190 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6377952755905512) internal successors, (832), 533 states have internal predecessors, (832), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1077 transitions. [2022-01-10 06:16:32,774 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1077 transitions. Word has length 94 [2022-01-10 06:16:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:32,775 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1077 transitions. [2022-01-10 06:16:32,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1077 transitions. [2022-01-10 06:16:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 06:16:32,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:32,777 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:32,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:32,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:32,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1138356604, now seen corresponding path program 1 times [2022-01-10 06:16:32,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:32,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518332944] [2022-01-10 06:16:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:32,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:32,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:32,996 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:32,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:16:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:33,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:33,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:33,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:33,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:33,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518332944] [2022-01-10 06:16:33,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518332944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:33,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:33,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:33,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68146649] [2022-01-10 06:16:33,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:33,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:33,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:33,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:33,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:33,488 INFO L87 Difference]: Start difference. First operand 667 states and 1077 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:33,555 INFO L93 Difference]: Finished difference Result 1297 states and 2106 transitions. [2022-01-10 06:16:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2022-01-10 06:16:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:33,562 INFO L225 Difference]: With dead ends: 1297 [2022-01-10 06:16:33,563 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:33,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:33,574 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 12 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:33,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3190 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6358267716535433) internal successors, (831), 533 states have internal predecessors, (831), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1076 transitions. [2022-01-10 06:16:33,601 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1076 transitions. Word has length 95 [2022-01-10 06:16:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:33,601 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1076 transitions. [2022-01-10 06:16:33,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1076 transitions. [2022-01-10 06:16:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 06:16:33,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:33,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:33,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:33,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:33,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash 258613534, now seen corresponding path program 1 times [2022-01-10 06:16:33,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:33,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255683720] [2022-01-10 06:16:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:33,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:33,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:33,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:33,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:16:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:34,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:34,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:34,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255683720] [2022-01-10 06:16:34,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255683720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:34,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:34,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:34,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339946091] [2022-01-10 06:16:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:34,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:34,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:34,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:34,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:34,268 INFO L87 Difference]: Start difference. First operand 667 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:34,335 INFO L93 Difference]: Finished difference Result 1297 states and 2105 transitions. [2022-01-10 06:16:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2022-01-10 06:16:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:34,341 INFO L225 Difference]: With dead ends: 1297 [2022-01-10 06:16:34,341 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:34,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:34,345 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 10 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:34,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 3190 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6338582677165354) internal successors, (830), 533 states have internal predecessors, (830), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1075 transitions. [2022-01-10 06:16:34,383 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1075 transitions. Word has length 96 [2022-01-10 06:16:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:34,383 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1075 transitions. [2022-01-10 06:16:34,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1075 transitions. [2022-01-10 06:16:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 06:16:34,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:34,385 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:34,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:34,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:34,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:34,607 INFO L85 PathProgramCache]: Analyzing trace with hash -355816512, now seen corresponding path program 1 times [2022-01-10 06:16:34,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:34,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134344675] [2022-01-10 06:16:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:34,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:34,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:34,609 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:34,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:16:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:34,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:34,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:35,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:35,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:35,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134344675] [2022-01-10 06:16:35,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134344675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:35,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:35,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:35,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829711070] [2022-01-10 06:16:35,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:35,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:35,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:35,040 INFO L87 Difference]: Start difference. First operand 667 states and 1075 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:35,093 INFO L93 Difference]: Finished difference Result 1297 states and 2104 transitions. [2022-01-10 06:16:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 97 [2022-01-10 06:16:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:35,098 INFO L225 Difference]: With dead ends: 1297 [2022-01-10 06:16:35,098 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:35,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:35,101 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 8 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:35,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3190 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6318897637795275) internal successors, (829), 533 states have internal predecessors, (829), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1074 transitions. [2022-01-10 06:16:35,121 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1074 transitions. Word has length 97 [2022-01-10 06:16:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:35,121 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1074 transitions. [2022-01-10 06:16:35,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1074 transitions. [2022-01-10 06:16:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 06:16:35,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:35,123 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:35,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:35,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:35,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1335477406, now seen corresponding path program 1 times [2022-01-10 06:16:35,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:35,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973297791] [2022-01-10 06:16:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:35,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:35,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:35,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:16:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:35,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:35,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:35,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:35,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:35,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973297791] [2022-01-10 06:16:35,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973297791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:35,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:35,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:35,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430929335] [2022-01-10 06:16:35,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:35,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:35,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:35,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:35,747 INFO L87 Difference]: Start difference. First operand 667 states and 1074 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:35,793 INFO L93 Difference]: Finished difference Result 1297 states and 2103 transitions. [2022-01-10 06:16:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2022-01-10 06:16:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:35,799 INFO L225 Difference]: With dead ends: 1297 [2022-01-10 06:16:35,799 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 06:16:35,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:35,802 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 6 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:35,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3190 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 06:16:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2022-01-10 06:16:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 508 states have (on average 1.6299212598425197) internal successors, (828), 533 states have internal predecessors, (828), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1073 transitions. [2022-01-10 06:16:35,821 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1073 transitions. Word has length 98 [2022-01-10 06:16:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 1073 transitions. [2022-01-10 06:16:35,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1073 transitions. [2022-01-10 06:16:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:16:35,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:35,824 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:35,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 06:16:36,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:36,041 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -752392700, now seen corresponding path program 1 times [2022-01-10 06:16:36,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666148436] [2022-01-10 06:16:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:36,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:36,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:36,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:36,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:16:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:36,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:16:36,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:36,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:36,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:36,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666148436] [2022-01-10 06:16:36,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666148436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:36,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:36,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:16:36,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092691022] [2022-01-10 06:16:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:36,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:36,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:36,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:36,520 INFO L87 Difference]: Start difference. First operand 667 states and 1073 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:36,658 INFO L93 Difference]: Finished difference Result 1263 states and 2035 transitions. [2022-01-10 06:16:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:36,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 99 [2022-01-10 06:16:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:36,666 INFO L225 Difference]: With dead ends: 1263 [2022-01-10 06:16:36,666 INFO L226 Difference]: Without dead ends: 682 [2022-01-10 06:16:36,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:36,670 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 117 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 6280 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:36,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 6280 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-01-10 06:16:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2022-01-10 06:16:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 518 states have (on average 1.6274131274131274) internal successors, (843), 545 states have internal predecessors, (843), 126 states have call successors, (126), 34 states have call predecessors, (126), 35 states have return successors, (123), 117 states have call predecessors, (123), 121 states have call successors, (123) [2022-01-10 06:16:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1092 transitions. [2022-01-10 06:16:36,701 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1092 transitions. Word has length 99 [2022-01-10 06:16:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:36,702 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1092 transitions. [2022-01-10 06:16:36,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1092 transitions. [2022-01-10 06:16:36,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:16:36,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:36,704 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:36,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:36,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:36,927 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1617041285, now seen corresponding path program 1 times [2022-01-10 06:16:36,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:36,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160518483] [2022-01-10 06:16:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:36,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:36,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:36,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:36,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:16:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:37,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:37,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:37,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:37,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:37,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160518483] [2022-01-10 06:16:37,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160518483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:37,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:37,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:37,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698458496] [2022-01-10 06:16:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:37,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:37,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:37,375 INFO L87 Difference]: Start difference. First operand 680 states and 1092 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:37,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:37,434 INFO L93 Difference]: Finished difference Result 1315 states and 2129 transitions. [2022-01-10 06:16:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:37,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2022-01-10 06:16:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:37,440 INFO L225 Difference]: With dead ends: 1315 [2022-01-10 06:16:37,440 INFO L226 Difference]: Without dead ends: 661 [2022-01-10 06:16:37,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:37,447 INFO L933 BasicCegarLoop]: 1066 mSDtfsCounter, 3 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:37,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3191 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-01-10 06:16:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2022-01-10 06:16:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 502 states have (on average 1.6215139442231075) internal successors, (814), 527 states have internal predecessors, (814), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1059 transitions. [2022-01-10 06:16:37,472 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1059 transitions. Word has length 99 [2022-01-10 06:16:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:37,473 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1059 transitions. [2022-01-10 06:16:37,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1059 transitions. [2022-01-10 06:16:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 06:16:37,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:37,476 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:37,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:37,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:37,690 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash -306407387, now seen corresponding path program 1 times [2022-01-10 06:16:37,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:37,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745057250] [2022-01-10 06:16:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:37,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:37,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:37,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:37,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:16:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:37,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:37,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:38,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:38,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745057250] [2022-01-10 06:16:38,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745057250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:38,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:38,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:38,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986004365] [2022-01-10 06:16:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:38,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:38,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:38,136 INFO L87 Difference]: Start difference. First operand 661 states and 1059 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:38,258 INFO L93 Difference]: Finished difference Result 1251 states and 2013 transitions. [2022-01-10 06:16:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2022-01-10 06:16:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:38,263 INFO L225 Difference]: With dead ends: 1251 [2022-01-10 06:16:38,263 INFO L226 Difference]: Without dead ends: 661 [2022-01-10 06:16:38,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:38,266 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 90 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:38,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 3004 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-01-10 06:16:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2022-01-10 06:16:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 502 states have (on average 1.6135458167330676) internal successors, (810), 527 states have internal predecessors, (810), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1055 transitions. [2022-01-10 06:16:38,284 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1055 transitions. Word has length 100 [2022-01-10 06:16:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:38,284 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1055 transitions. [2022-01-10 06:16:38,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1055 transitions. [2022-01-10 06:16:38,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:16:38,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:38,286 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:38,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:38,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:38,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 406449825, now seen corresponding path program 1 times [2022-01-10 06:16:38,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:38,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103727781] [2022-01-10 06:16:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:38,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:38,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:38,506 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:38,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:16:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:38,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:38,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:38,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:38,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103727781] [2022-01-10 06:16:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103727781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:38,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:38,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:38,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324240892] [2022-01-10 06:16:38,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:38,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:38,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:38,924 INFO L87 Difference]: Start difference. First operand 661 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:39,034 INFO L93 Difference]: Finished difference Result 1251 states and 2009 transitions. [2022-01-10 06:16:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:39,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-01-10 06:16:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:39,038 INFO L225 Difference]: With dead ends: 1251 [2022-01-10 06:16:39,039 INFO L226 Difference]: Without dead ends: 661 [2022-01-10 06:16:39,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:39,041 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 85 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:39,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 3004 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-01-10 06:16:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2022-01-10 06:16:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 502 states have (on average 1.6055776892430278) internal successors, (806), 527 states have internal predecessors, (806), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1051 transitions. [2022-01-10 06:16:39,057 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1051 transitions. Word has length 101 [2022-01-10 06:16:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:39,058 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1051 transitions. [2022-01-10 06:16:39,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1051 transitions. [2022-01-10 06:16:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:16:39,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:39,060 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:39,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:39,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:39,278 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -591582272, now seen corresponding path program 1 times [2022-01-10 06:16:39,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:39,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852822768] [2022-01-10 06:16:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:39,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:39,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:39,281 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:39,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:16:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:39,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:39,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:39,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852822768] [2022-01-10 06:16:39,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852822768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:39,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:39,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:39,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682400020] [2022-01-10 06:16:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:39,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:39,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:39,674 INFO L87 Difference]: Start difference. First operand 661 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:39,765 INFO L93 Difference]: Finished difference Result 1251 states and 2005 transitions. [2022-01-10 06:16:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-01-10 06:16:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:39,770 INFO L225 Difference]: With dead ends: 1251 [2022-01-10 06:16:39,770 INFO L226 Difference]: Without dead ends: 661 [2022-01-10 06:16:39,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:39,773 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 80 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:39,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 3004 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-01-10 06:16:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2022-01-10 06:16:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 502 states have (on average 1.597609561752988) internal successors, (802), 527 states have internal predecessors, (802), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1047 transitions. [2022-01-10 06:16:39,790 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1047 transitions. Word has length 102 [2022-01-10 06:16:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:39,791 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1047 transitions. [2022-01-10 06:16:39,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1047 transitions. [2022-01-10 06:16:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:16:39,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:39,792 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:39,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:40,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:40,007 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1807909056, now seen corresponding path program 1 times [2022-01-10 06:16:40,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:40,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729493899] [2022-01-10 06:16:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:40,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:40,009 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:40,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:16:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:40,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:16:40,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:40,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:40,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:40,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729493899] [2022-01-10 06:16:40,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729493899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:40,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:40,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:16:40,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264097111] [2022-01-10 06:16:40,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:40,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:40,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:40,437 INFO L87 Difference]: Start difference. First operand 661 states and 1047 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:40,519 INFO L93 Difference]: Finished difference Result 1251 states and 2001 transitions. [2022-01-10 06:16:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 102 [2022-01-10 06:16:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:40,525 INFO L225 Difference]: With dead ends: 1251 [2022-01-10 06:16:40,525 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 06:16:40,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:40,528 INFO L933 BasicCegarLoop]: 1035 mSDtfsCounter, 110 mSDsluCounter, 5091 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 6126 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:40,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 6126 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 06:16:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-01-10 06:16:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 481 states have (on average 1.5966735966735968) internal successors, (768), 506 states have internal predecessors, (768), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1013 transitions. [2022-01-10 06:16:40,544 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1013 transitions. Word has length 102 [2022-01-10 06:16:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:40,544 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 1013 transitions. [2022-01-10 06:16:40,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1013 transitions. [2022-01-10 06:16:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:16:40,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:40,546 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:40,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:40,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:40,760 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1207391900, now seen corresponding path program 1 times [2022-01-10 06:16:40,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:40,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833196005] [2022-01-10 06:16:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:40,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:40,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:40,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:16:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:41,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:41,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:41,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833196005] [2022-01-10 06:16:41,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833196005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:41,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:41,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:41,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955318240] [2022-01-10 06:16:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:41,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:41,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:41,154 INFO L87 Difference]: Start difference. First operand 640 states and 1013 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:41,203 INFO L93 Difference]: Finished difference Result 1230 states and 1967 transitions. [2022-01-10 06:16:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:41,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-01-10 06:16:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:41,209 INFO L225 Difference]: With dead ends: 1230 [2022-01-10 06:16:41,209 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 06:16:41,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:41,213 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 41 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:41,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2990 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 06:16:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-01-10 06:16:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 481 states have (on average 1.5945945945945945) internal successors, (767), 506 states have internal predecessors, (767), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:41,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1012 transitions. [2022-01-10 06:16:41,229 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1012 transitions. Word has length 103 [2022-01-10 06:16:41,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:41,229 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 1012 transitions. [2022-01-10 06:16:41,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:41,230 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1012 transitions. [2022-01-10 06:16:41,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:16:41,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:41,231 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:41,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:41,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:41,446 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash -480752805, now seen corresponding path program 1 times [2022-01-10 06:16:41,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326690740] [2022-01-10 06:16:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:41,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:41,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:41,448 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:41,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:16:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:41,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:41,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:41,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:41,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326690740] [2022-01-10 06:16:41,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326690740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:41,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:41,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:41,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697170522] [2022-01-10 06:16:41,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:41,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:41,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:41,853 INFO L87 Difference]: Start difference. First operand 640 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:41,901 INFO L93 Difference]: Finished difference Result 1230 states and 1966 transitions. [2022-01-10 06:16:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:41,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-01-10 06:16:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:41,907 INFO L225 Difference]: With dead ends: 1230 [2022-01-10 06:16:41,907 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 06:16:41,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:41,910 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 39 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:41,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2990 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 06:16:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-01-10 06:16:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 481 states have (on average 1.5925155925155925) internal successors, (766), 506 states have internal predecessors, (766), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1011 transitions. [2022-01-10 06:16:41,927 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1011 transitions. Word has length 104 [2022-01-10 06:16:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:41,927 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 1011 transitions. [2022-01-10 06:16:41,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1011 transitions. [2022-01-10 06:16:41,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:16:41,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:41,929 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:41,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:42,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:42,143 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:42,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -967127595, now seen corresponding path program 1 times [2022-01-10 06:16:42,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:42,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898702678] [2022-01-10 06:16:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:42,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:42,145 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:42,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:16:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:42,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:16:42,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:42,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:42,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:42,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898702678] [2022-01-10 06:16:42,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898702678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:42,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:42,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:42,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955380278] [2022-01-10 06:16:42,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:42,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:16:42,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:16:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:16:42,524 INFO L87 Difference]: Start difference. First operand 640 states and 1011 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:42,576 INFO L93 Difference]: Finished difference Result 1230 states and 1965 transitions. [2022-01-10 06:16:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:16:42,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-01-10 06:16:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:42,581 INFO L225 Difference]: With dead ends: 1230 [2022-01-10 06:16:42,581 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 06:16:42,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:42,584 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 37 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:42,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2990 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 06:16:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-01-10 06:16:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 481 states have (on average 1.5904365904365905) internal successors, (765), 506 states have internal predecessors, (765), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1010 transitions. [2022-01-10 06:16:42,602 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1010 transitions. Word has length 105 [2022-01-10 06:16:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:42,602 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 1010 transitions. [2022-01-10 06:16:42,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:16:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1010 transitions. [2022-01-10 06:16:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:16:42,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:42,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:42,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:42,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:42,819 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:42,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1399566999, now seen corresponding path program 1 times [2022-01-10 06:16:42,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:42,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123105727] [2022-01-10 06:16:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:42,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:42,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:42,821 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:42,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:16:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:43,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:16:43,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:43,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:43,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123105727] [2022-01-10 06:16:43,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123105727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:43,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:43,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:43,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642765695] [2022-01-10 06:16:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:43,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:43,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:43,234 INFO L87 Difference]: Start difference. First operand 640 states and 1010 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:43,334 INFO L93 Difference]: Finished difference Result 1224 states and 1953 transitions. [2022-01-10 06:16:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:16:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2022-01-10 06:16:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:43,338 INFO L225 Difference]: With dead ends: 1224 [2022-01-10 06:16:43,338 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 06:16:43,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:16:43,342 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 30 mSDsluCounter, 5949 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6944 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:43,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 6944 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:16:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 06:16:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-01-10 06:16:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 481 states have (on average 1.5883575883575884) internal successors, (764), 506 states have internal predecessors, (764), 125 states have call successors, (125), 34 states have call predecessors, (125), 33 states have return successors, (120), 116 states have call predecessors, (120), 120 states have call successors, (120) [2022-01-10 06:16:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1009 transitions. [2022-01-10 06:16:43,359 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1009 transitions. Word has length 105 [2022-01-10 06:16:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:43,360 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 1009 transitions. [2022-01-10 06:16:43,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1009 transitions. [2022-01-10 06:16:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 06:16:43,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:43,361 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:43,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:43,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:43,577 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash 524771366, now seen corresponding path program 1 times [2022-01-10 06:16:43,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:43,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191266205] [2022-01-10 06:16:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:43,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:43,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:43,579 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:43,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:16:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:43,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:16:43,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:43,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:43,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:43,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191266205] [2022-01-10 06:16:43,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191266205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:43,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:43,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:16:43,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698658694] [2022-01-10 06:16:43,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:43,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:16:43,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:43,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:16:43,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:16:43,973 INFO L87 Difference]: Start difference. First operand 640 states and 1009 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:44,026 INFO L93 Difference]: Finished difference Result 1825 states and 2916 transitions. [2022-01-10 06:16:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:16:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2022-01-10 06:16:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:44,035 INFO L225 Difference]: With dead ends: 1825 [2022-01-10 06:16:44,036 INFO L226 Difference]: Without dead ends: 1249 [2022-01-10 06:16:44,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:16:44,040 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 948 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:44,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2178 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:44,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-10 06:16:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1236. [2022-01-10 06:16:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 936 states have (on average 1.5950854700854702) internal successors, (1493), 979 states have internal predecessors, (1493), 234 states have call successors, (234), 66 states have call predecessors, (234), 65 states have return successors, (233), 223 states have call predecessors, (233), 229 states have call successors, (233) [2022-01-10 06:16:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1960 transitions. [2022-01-10 06:16:44,081 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1960 transitions. Word has length 106 [2022-01-10 06:16:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:44,081 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1960 transitions. [2022-01-10 06:16:44,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:16:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1960 transitions. [2022-01-10 06:16:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:16:44,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:44,084 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:44,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:44,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:44,300 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash -463267461, now seen corresponding path program 1 times [2022-01-10 06:16:44,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:44,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441354686] [2022-01-10 06:16:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:44,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:44,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:44,303 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:44,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:16:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:16:44,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:45,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:45,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:45,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441354686] [2022-01-10 06:16:45,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441354686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:45,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:45,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:16:45,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919953505] [2022-01-10 06:16:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:45,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:16:45,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:16:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:16:45,175 INFO L87 Difference]: Start difference. First operand 1236 states and 1960 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:50,269 INFO L93 Difference]: Finished difference Result 4812 states and 7911 transitions. [2022-01-10 06:16:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:16:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 107 [2022-01-10 06:16:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:50,293 INFO L225 Difference]: With dead ends: 4812 [2022-01-10 06:16:50,293 INFO L226 Difference]: Without dead ends: 3686 [2022-01-10 06:16:50,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:50,300 INFO L933 BasicCegarLoop]: 1752 mSDtfsCounter, 3022 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 4777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:50,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3246 Valid, 2826 Invalid, 4777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 4040 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-01-10 06:16:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-01-10 06:16:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3600. [2022-01-10 06:16:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 2679 states have (on average 1.6237402015677491) internal successors, (4350), 2815 states have internal predecessors, (4350), 737 states have call successors, (737), 174 states have call predecessors, (737), 183 states have return successors, (867), 719 states have call predecessors, (867), 732 states have call successors, (867) [2022-01-10 06:16:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 5954 transitions. [2022-01-10 06:16:50,451 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 5954 transitions. Word has length 107 [2022-01-10 06:16:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:50,452 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 5954 transitions. [2022-01-10 06:16:50,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-01-10 06:16:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 5954 transitions. [2022-01-10 06:16:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:16:50,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:50,464 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:50,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:50,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:50,678 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:50,679 INFO L85 PathProgramCache]: Analyzing trace with hash -752767139, now seen corresponding path program 1 times [2022-01-10 06:16:50,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:50,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967042374] [2022-01-10 06:16:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:50,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:50,680 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:50,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:16:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:50,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:16:50,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:51,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:51,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967042374] [2022-01-10 06:16:51,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967042374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:51,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:51,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:16:51,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002199508] [2022-01-10 06:16:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:51,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:16:51,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:16:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:16:51,212 INFO L87 Difference]: Start difference. First operand 3600 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 06:16:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:51,352 INFO L93 Difference]: Finished difference Result 4822 states and 7976 transitions. [2022-01-10 06:16:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:16:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 152 [2022-01-10 06:16:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:51,371 INFO L225 Difference]: With dead ends: 4822 [2022-01-10 06:16:51,371 INFO L226 Difference]: Without dead ends: 3077 [2022-01-10 06:16:51,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:16:51,381 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 937 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:51,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 2951 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:16:51,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-01-10 06:16:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3064. [2022-01-10 06:16:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2274 states have (on average 1.6165347405452946) internal successors, (3676), 2392 states have internal predecessors, (3676), 633 states have call successors, (633), 147 states have call predecessors, (633), 156 states have return successors, (735), 619 states have call predecessors, (735), 628 states have call successors, (735) [2022-01-10 06:16:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5044 transitions. [2022-01-10 06:16:51,493 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5044 transitions. Word has length 152 [2022-01-10 06:16:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:51,493 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 5044 transitions. [2022-01-10 06:16:51,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 06:16:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5044 transitions. [2022-01-10 06:16:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 06:16:51,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:51,503 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:51,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:51,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:51,720 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1907178862, now seen corresponding path program 1 times [2022-01-10 06:16:51,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:51,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587622651] [2022-01-10 06:16:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:51,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:51,721 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:51,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:16:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:52,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 06:16:52,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:52,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:52,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:52,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587622651] [2022-01-10 06:16:52,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587622651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:52,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:52,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:16:52,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572784086] [2022-01-10 06:16:52,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:52,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:16:52,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:52,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:16:52,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:16:52,415 INFO L87 Difference]: Start difference. First operand 3064 states and 5044 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-01-10 06:16:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:55,049 INFO L93 Difference]: Finished difference Result 6049 states and 10133 transitions. [2022-01-10 06:16:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:16:55,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 151 [2022-01-10 06:16:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:55,074 INFO L225 Difference]: With dead ends: 6049 [2022-01-10 06:16:55,074 INFO L226 Difference]: Without dead ends: 3094 [2022-01-10 06:16:55,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:16:55,096 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 1471 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 3780 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 3780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:55,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 2322 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 3780 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 06:16:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2022-01-10 06:16:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3084. [2022-01-10 06:16:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 2289 states have (on average 1.6124945391000436) internal successors, (3691), 2407 states have internal predecessors, (3691), 633 states have call successors, (633), 147 states have call predecessors, (633), 161 states have return successors, (820), 624 states have call predecessors, (820), 628 states have call successors, (820) [2022-01-10 06:16:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 5144 transitions. [2022-01-10 06:16:55,269 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 5144 transitions. Word has length 151 [2022-01-10 06:16:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:55,269 INFO L470 AbstractCegarLoop]: Abstraction has 3084 states and 5144 transitions. [2022-01-10 06:16:55,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-01-10 06:16:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 5144 transitions. [2022-01-10 06:16:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:16:55,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:55,279 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:55,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:55,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:55,496 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:55,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1134687654, now seen corresponding path program 1 times [2022-01-10 06:16:55,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:55,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526266049] [2022-01-10 06:16:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:55,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:55,498 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:55,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:16:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:16:55,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:16:56,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:56,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:56,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526266049] [2022-01-10 06:16:56,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526266049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:56,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:56,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:16:56,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785618039] [2022-01-10 06:16:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:56,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:16:56,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:16:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:16:56,046 INFO L87 Difference]: Start difference. First operand 3084 states and 5144 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:16:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:16:56,799 INFO L93 Difference]: Finished difference Result 6079 states and 10343 transitions. [2022-01-10 06:16:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:16:56,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2022-01-10 06:16:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:16:56,818 INFO L225 Difference]: With dead ends: 6079 [2022-01-10 06:16:56,818 INFO L226 Difference]: Without dead ends: 3104 [2022-01-10 06:16:56,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:16:56,829 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 924 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:16:56,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 2476 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:16:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-01-10 06:16:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 3104. [2022-01-10 06:16:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2304 states have (on average 1.6085069444444444) internal successors, (3706), 2422 states have internal predecessors, (3706), 633 states have call successors, (633), 152 states have call predecessors, (633), 166 states have return successors, (810), 624 states have call predecessors, (810), 628 states have call successors, (810) [2022-01-10 06:16:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5149 transitions. [2022-01-10 06:16:56,948 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5149 transitions. Word has length 152 [2022-01-10 06:16:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:16:56,948 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5149 transitions. [2022-01-10 06:16:56,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:16:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5149 transitions. [2022-01-10 06:16:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:16:56,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:16:56,958 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:16:56,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:16:57,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:16:57,173 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:16:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:16:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1780801234, now seen corresponding path program 1 times [2022-01-10 06:16:57,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:16:57,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170676508] [2022-01-10 06:16:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:16:57,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:16:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:16:57,175 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:16:57,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:16:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:16:57,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:16:57,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:16:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 06:16:57,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:16:57,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:16:57,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170676508] [2022-01-10 06:16:57,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170676508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:16:57,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:16:57,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:16:57,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199498350] [2022-01-10 06:16:57,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:16:57,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:16:57,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:16:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:16:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:16:57,746 INFO L87 Difference]: Start difference. First operand 3104 states and 5149 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-01-10 06:17:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:03,554 INFO L93 Difference]: Finished difference Result 11717 states and 19835 transitions. [2022-01-10 06:17:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:17:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 152 [2022-01-10 06:17:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:03,624 INFO L225 Difference]: With dead ends: 11717 [2022-01-10 06:17:03,624 INFO L226 Difference]: Without dead ends: 8722 [2022-01-10 06:17:03,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:17:03,642 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 3892 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 6302 mSolverCounterSat, 1258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 7560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1258 IncrementalHoareTripleChecker+Valid, 6302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:03,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3996 Valid, 3254 Invalid, 7560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1258 Valid, 6302 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 06:17:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8722 states. [2022-01-10 06:17:03,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8722 to 8656. [2022-01-10 06:17:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8656 states, 6348 states have (on average 1.5916824196597354) internal successors, (10104), 6684 states have internal predecessors, (10104), 1810 states have call successors, (1810), 451 states have call predecessors, (1810), 497 states have return successors, (2458), 1794 states have call predecessors, (2458), 1805 states have call successors, (2458) [2022-01-10 06:17:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 14372 transitions. [2022-01-10 06:17:04,028 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 14372 transitions. Word has length 152 [2022-01-10 06:17:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:04,029 INFO L470 AbstractCegarLoop]: Abstraction has 8656 states and 14372 transitions. [2022-01-10 06:17:04,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-01-10 06:17:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 14372 transitions. [2022-01-10 06:17:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:17:04,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:04,037 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:04,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:17:04,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:17:04,251 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1616395228, now seen corresponding path program 1 times [2022-01-10 06:17:04,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:04,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830002824] [2022-01-10 06:17:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:04,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:04,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:04,254 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:17:04,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:17:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:17:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:17:04,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:04,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:04,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830002824] [2022-01-10 06:17:04,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830002824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:04,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:04,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:17:04,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399036237] [2022-01-10 06:17:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:04,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:17:04,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:17:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:17:04,850 INFO L87 Difference]: Start difference. First operand 8656 states and 14372 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 06:17:05,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:05,312 INFO L93 Difference]: Finished difference Result 25434 states and 42953 transitions. [2022-01-10 06:17:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:17:05,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 152 [2022-01-10 06:17:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:05,424 INFO L225 Difference]: With dead ends: 25434 [2022-01-10 06:17:05,424 INFO L226 Difference]: Without dead ends: 16887 [2022-01-10 06:17:05,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:17:05,476 INFO L933 BasicCegarLoop]: 1131 mSDtfsCounter, 922 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:05,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 2116 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:17:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16887 states. [2022-01-10 06:17:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16887 to 16874. [2022-01-10 06:17:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16874 states, 12389 states have (on average 1.5936718056340302) internal successors, (19744), 13058 states have internal predecessors, (19744), 3490 states have call successors, (3490), 901 states have call predecessors, (3490), 994 states have return successors, (5055), 3462 states have call predecessors, (5055), 3485 states have call successors, (5055) [2022-01-10 06:17:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16874 states to 16874 states and 28289 transitions. [2022-01-10 06:17:06,285 INFO L78 Accepts]: Start accepts. Automaton has 16874 states and 28289 transitions. Word has length 152 [2022-01-10 06:17:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:06,286 INFO L470 AbstractCegarLoop]: Abstraction has 16874 states and 28289 transitions. [2022-01-10 06:17:06,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-01-10 06:17:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 16874 states and 28289 transitions. [2022-01-10 06:17:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 06:17:06,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:06,302 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:06,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:17:06,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:17:06,516 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1294063084, now seen corresponding path program 1 times [2022-01-10 06:17:06,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:06,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943662773] [2022-01-10 06:17:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:06,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:06,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:06,519 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:17:06,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:17:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:06,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:17:06,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:17:07,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:07,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943662773] [2022-01-10 06:17:07,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943662773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:07,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:07,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:17:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051431299] [2022-01-10 06:17:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:07,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:17:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:17:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:07,288 INFO L87 Difference]: Start difference. First operand 16874 states and 28289 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:17:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:08,623 INFO L93 Difference]: Finished difference Result 33700 states and 57686 transitions. [2022-01-10 06:17:08,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:17:08,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2022-01-10 06:17:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:08,750 INFO L225 Difference]: With dead ends: 33700 [2022-01-10 06:17:08,751 INFO L226 Difference]: Without dead ends: 17024 [2022-01-10 06:17:08,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:08,846 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 931 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:08,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2477 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 06:17:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17024 states. [2022-01-10 06:17:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17024 to 17024. [2022-01-10 06:17:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17024 states, 12509 states have (on average 1.587976656807099) internal successors, (19864), 13178 states have internal predecessors, (19864), 3490 states have call successors, (3490), 931 states have call predecessors, (3490), 1024 states have return successors, (5025), 3462 states have call predecessors, (5025), 3485 states have call successors, (5025) [2022-01-10 06:17:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17024 states to 17024 states and 28379 transitions. [2022-01-10 06:17:09,845 INFO L78 Accepts]: Start accepts. Automaton has 17024 states and 28379 transitions. Word has length 153 [2022-01-10 06:17:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:09,846 INFO L470 AbstractCegarLoop]: Abstraction has 17024 states and 28379 transitions. [2022-01-10 06:17:09,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:17:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17024 states and 28379 transitions. [2022-01-10 06:17:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 06:17:09,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:09,863 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:09,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:17:10,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:17:10,079 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1703344596, now seen corresponding path program 1 times [2022-01-10 06:17:10,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358101041] [2022-01-10 06:17:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:10,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:10,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:10,083 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:17:10,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:17:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:10,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 06:17:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:17:12,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:12,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358101041] [2022-01-10 06:17:12,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358101041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:12,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:12,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:17:12,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969344989] [2022-01-10 06:17:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:12,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:17:12,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:17:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:17:12,649 INFO L87 Difference]: Start difference. First operand 17024 states and 28379 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-01-10 06:17:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:18,940 INFO L93 Difference]: Finished difference Result 40185 states and 67407 transitions. [2022-01-10 06:17:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:17:18,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 153 [2022-01-10 06:17:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:19,100 INFO L225 Difference]: With dead ends: 40185 [2022-01-10 06:17:19,101 INFO L226 Difference]: Without dead ends: 23363 [2022-01-10 06:17:19,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:17:19,181 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 3049 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 6283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:19,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3267 Valid, 3168 Invalid, 6283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-10 06:17:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23363 states. [2022-01-10 06:17:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23363 to 22997. [2022-01-10 06:17:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22997 states, 17004 states have (on average 1.5939778875558692) internal successors, (27104), 17884 states have internal predecessors, (27104), 4611 states have call successors, (4611), 1282 states have call predecessors, (4611), 1381 states have return successors, (6696), 4538 states have call predecessors, (6696), 4606 states have call successors, (6696) [2022-01-10 06:17:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22997 states to 22997 states and 38411 transitions. [2022-01-10 06:17:20,308 INFO L78 Accepts]: Start accepts. Automaton has 22997 states and 38411 transitions. Word has length 153 [2022-01-10 06:17:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:17:20,309 INFO L470 AbstractCegarLoop]: Abstraction has 22997 states and 38411 transitions. [2022-01-10 06:17:20,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-01-10 06:17:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22997 states and 38411 transitions. [2022-01-10 06:17:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 06:17:20,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:17:20,322 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:17:20,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:17:20,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:17:20,535 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:17:20,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:17:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1539238496, now seen corresponding path program 1 times [2022-01-10 06:17:20,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:17:20,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832497723] [2022-01-10 06:17:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:17:20,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:17:20,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:17:20,539 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:17:20,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:17:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:17:20,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:17:20,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:17:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:17:21,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:17:21,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:17:21,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832497723] [2022-01-10 06:17:21,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832497723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:17:21,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:17:21,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:17:21,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121409668] [2022-01-10 06:17:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:17:21,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:17:21,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:17:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:17:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:17:21,184 INFO L87 Difference]: Start difference. First operand 22997 states and 38411 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-01-10 06:17:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:17:22,775 INFO L93 Difference]: Finished difference Result 46048 states and 78492 transitions. [2022-01-10 06:17:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:17:22,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2022-01-10 06:17:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:17:23,037 INFO L225 Difference]: With dead ends: 46048 [2022-01-10 06:17:23,038 INFO L226 Difference]: Without dead ends: 23249 [2022-01-10 06:17:23,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:17:23,120 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 922 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:17:23,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 2477 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:17:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23249 states.